Facial muscle exercise device



FIG. 1 is a perspective view of a facial muscle exercise device showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a right side view thereof, the opposite side being a mirror image thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a bottom view thereof. 

The ornamental design for a facial muscle exercise device, as shown and described. 